I Capture the Castle is hilarious and sweet without being saccharine. Very classic. Don't be put off by the new cover, which they designed after the movie came out. (Haven't seen it - is it worth two hours of my life?)
C.S. Lewis never gets old. Can you tell how many times I've read these? Will you be horrified to find out that this is actually the second boxed set I've been through and that the first 30 pages of The Silver Chair fell out years ago and I lost them? My books aren't carefully tended, they are water stained and dog eared and sometimes full of crumbs, but they are thoroughly loved.